Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 30 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace EMT 205 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions
Do not waste time on a question you don’t know
Move as fast as possible and starting with questions that don’t have calculation first to save time
Always crosscheck
Don’t be in a hurry to submit, you are not in a competition
Don’t be scared. Getting an A is easy
Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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EMT 205

1 / 40

1. The Southern Ocean is uniquely defined by:

A. A complete lack of currents

B. The shallowest average depth

C. Water surrounding Antarctica up to 60° S

D. The absence of salinity variations

2 / 40

2. Chlorinity is defined as:

A. The total amount of salts in a liter of seawater

B. The mass of halides expressed as Cl- precipitated from 1 kg of seawater

C. The ratio of sodium to chloride in seawater

D. The ionic strength of seawater

3 / 40

3. The primary sources of dissolved nutrients in seawater are:

A. Excreta of animals and decomposed organic matter

B. Thermal vents and atmospheric deposition

C. Volcanic eruptions and evaporation

D. Photosynthesis and chemical weathering

4 / 40

4. Balanced natural resource management focuses on the interaction between:

A. Markets and economies

B. Infrastructure and development

C. Government and policies

D. People and natural landscapes

5 / 40

5. The major gases dissolved in seawater include:

A. Argon, nitrogen, and carbon dioxide

B. Hydrogen, nitrogen, and oxygen

C. Methane, nitrogen, and argon

D. Oxygen, carbon dioxide, and nitrogen

6 / 40

6. The Arctic Ocean is characterized by:

A. The greatest depth among all oceans

B. A shallow basin with an average depth of 5,449 meters

C. Being the saltiest ocean

D. A completely enclosed system

7 / 40

7. The tipping thermometer is used to measure temperature at:

A. The ocean floor exclusively

B. Surface levels only

C. All depths simultaneously

D. Intermediate depths

8 / 40

8. The oxygen minimum zone in the ocean occurs due to:

A. Excessive mixing of surface and bottom waters

B. Rapid oxygen consumption by respiration and decomposition

C. Increased carbon dioxide emissions

D. High photosynthetic activity

9 / 40

9. The most accurate method of determining salinity is:

A. Boiling off all water

B. Conductivity meters

C. Use of hydrometers

D. Evaporation method

10 / 40

10. Seasonal thermoclines are most prominent in:

A. Polar regions

B. Coastal estuaries

C. Middle latitudes with strong seasonal warming

D. Low latitude tropical areas

11 / 40

11. The tipping thermometer is used to measure:

A. Conductivity

B. Water temperature at selected depths

C. pH levels

D. Water salinity

12 / 40

12. Seafog is formed when:

A. High winds reduce surface temperature

B. Warm damp air passes over a cold sea surface

C. Cold air flows over warm water

D. Humidity levels drop significantly

13 / 40

13. Which oceanographic branch focuses on marine life distribution and environmental aspects?

A. Geological oceanography

B. Chemical oceanography

C. Physical oceanography

D. Biological oceanography

14 / 40

14. The surface temperature of the ocean varies mainly due to:

A. Seasonal and latitudinal changes

B. Salinity differences

C. Pressure fluctuations

D. Deep-water currents

15 / 40

15. The relationship between salinity and dissolved oxygen concentration is:

A. Not related

B. Constant

C. Directly proportional

D. Inversely proportional

16 / 40

16. The buffering effect of seawater is mainly due to the presence of:

A. Sodium ions

B. Phosphate ions

C. Carbonate-bicarbonate system

D. Chlorine gas

17 / 40

17. The Atlantic Ocean is noted for:

A. Being the shallowest ocean

B. Being fully enclosed in the southern hemisphere

C. Having the busiest sea route in the world

D. Lacking significant marine life

18 / 40

18. The Southern Ocean was officially recognized as a separate ocean in:

A. 1985

B. 1995

C. 2015

D. 2000

19 / 40

19. The most abundant dissolved gas in seawater that influences marine life is:

A. Nitrogen

B. Oxygen

C. Methane

D. Carbon dioxide

20 / 40

20. Oceanic upwelling contributes to:

A. Increased nutrient availability in surface waters

B. Surface water temperature stabilization

C. Oxygen depletion at the ocean surface

D. Decreased salinity near coastal zones

21 / 40

21. The largest ocean by surface area and volume is:

A. Arctic Ocean

B. Pacific Ocean

C. Indian Ocean

D. Atlantic Ocean

22 / 40

22. The Mediterranean Sea experiences high salinity primarily due to:

A. Excess evaporation

B. Minimal river inflows

C. Rapid thawing of ice

D. High precipitation levels

23 / 40

23. The major constituent of seawater contributing most to salinity is:

A. Magnesium

B. Sulfate

C. Sodium chloride

D. Potassium

24 / 40

24. The salinity of brackish water typically falls within the range of:

A. 0.6–30 ppt

B. 0–0.5 ppt

C. Greater than 50 ppt

D. 31–50 ppt

25 / 40

25. Ice floats on seawater because:

A. Pressure increases at freezing points

B. Seawater lacks dissolved solids

C. It has higher salinity than water

D. Water density decreases below 4°C

26 / 40

26. The term “halocline” refers to:

A. Seasonal salinity variations

B. A zone with large salinity changes below the surface

C. A well-mixed surface layer of salinity

D. Uniform salinity at ocean bottoms

27 / 40

27. The Pacific Ocean occupies approximately what fraction of the Earth’s surface?

A. 1/2

B. 2/3

C. 1/3

D. 1/4

28 / 40

28. The solubility of gases in seawater decreases with:

A. Increasing depth

B. Decreasing pressure

C. Increasing temperature

D. Decreasing salinity

29 / 40

29. The major factor influencing surface salinity is:

A. Upwelling

B. Ocean currents

C. Photosynthesis

D. Precipitation and evaporation

30 / 40

30. Ocean currents like the Gulf Stream influence:

A. Global heat transport and climate

B. Nutrient depletion in polar regions

C. Reduced salinity in equatorial regions

D. The formation of oceanic trenches

31 / 40

31. The Gulf Stream influences:

A. Nutrient distribution near the surface

B. Rainfall patterns and oceanic heat transport

C. Formation of estuarine environments

D. Oxygen content in deep-sea zones

32 / 40

32. The Indian Ocean is distinctive because:

A. It contains the deepest oceanic trench

B. It is surrounded by ice

C. It is mostly enclosed to the north

D. It is the largest ocean by surface area

33 / 40

33. The property of seawater that influences its electrical conductivity is:

A. Alkalinity levels

B. The presence of dissolved salts

C. High oxygen content

D. Temperature exclusively

34 / 40

34. The average depth of the world oceans is approximately:

A. 7,450 m

B. 5,500 m

C. 3,700 m

D. 10,542 m

35 / 40

35. Ocean density is directly proportional to:

A. Salinity and pressure

B. Dissolved oxygen concentration

C. Temperature and pressure

D. Salinity and temperature

36 / 40

36. In seawater, carbon dioxide plays a key role in:

A. Buffering pH levels

B. Dissolved oxygen replenishment

C. Temperature regulation

D. Salinity variations

37 / 40

37. The surface salinity of the ocean is lowest near:

A. Polar regions

B. Equatorial regions with high evaporation

C. Arid coastal zones

D. Regions with significant river inflow

38 / 40

38. The relationship between chlorinity and salinity is expressed as:

A. Salinity = 0.5 × Chlorinity

B. Chlorinity = Salinity ÷ 1.80655

C. Chlorinity = 1.5 × Salinity

D. Salinity = 1.80655 × Chlorinity

39 / 40

39. The salinity range in most oceans and seas is typically:

A. 28-32%

B. 40-45%

C. 20-25%

D. 32-38%

40 / 40

40. Conductivity in seawater is primarily measured in units of:

A. Parts per thousand

B. Grams per kilogram

C. Micrograms per liter

D. Millisiemens per centimeter

Your score is

The average score is 43%

EMT 205 CBT PRACTICE

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